The bike that started it all the plus-size movement that is. The Krampus features Surlys Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs. Rolling on 29 x 3 tires, this bike can roll over just about anything you can point it at.

• 100% Surly 4130 Chromoly steel frame and fork; double-butted main triangle and 44mm headtube
• The tubeset uses Surly custom trumpet tubes for greater stiffness and durability
• Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru-axle, as well as 135mm with 10/12 washer
• Internal dropper seatpost routing
• ED coated for an added layer of internal frame protection
• Clearance for 29 x 3″ tires